Understanding NACE MR0175/ISO 15156 Requirements for HIC Evaluation and Testing Standards

Are you uncertain about the requirements of ANSI/NACE MR0175/ISO 15156 for evaluating the risk of Hydrogen Induced Cracking (HIC) and complying with NACE TM0284 testing standards for HIC resistance? OGC Energy can assist you in identifying if HIC testing is necessary and help you determine the requirements to meet NACE MR0175.

Interpreting NACE/ISO Requirements for Pressure Vessel Plate Material

One common question regarding NACE MR0175/ISO 15156-2 Clause 8 is whether HIC testing is necessary for pressure vessel plate material. The answer is that HIC testing is only necessary if the HIC resistance of the plate is uncertain. If the risk of HIC failure of the equipment is evaluated and considered acceptable, HIC testing is not required.

Ensuring Satisfactory HIC Performance under Sour Service

The goal of ISO 15156-2, Clause 8, is to ensure the selection of materials that give satisfactory HIC performance under sour service. There are no specific conditions for mandatory HIC testing other than uncertain HIC resistance.

OGC Energy provides checklists to ensure materials comply with NACE MR0175 and help quantify the risk of HIC. Contact us today to learn more.

Reference: ISO 15156 Maintenance Panel Inquiry #2005-04.